The major class(es) of neurotransmitter receptor(s) found in postsynaptic membranes are
A. metabotropic and neurotropic.
B. ionotropic and gonadotropic.
C. gonadotropic and neurotropic.
D. neurotropic and isotopic.
E. metabotropic and ionotropic.
E. metabotropic and ionotropic.
Biology & Microbiology
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The nectar that bumblebees feed on is an example of a(n) __________
a. carbohydrate b. protein c. amino acid d. peptide
Biology & Microbiology
Which of the human organs is responsible for
breaking down ethanol and other toxins?
a. stomach b. liver c. small intestine d. pancreas e. spleen
Biology & Microbiology
Which chamber of the heart is the most powerful?
1.right atrium
2.right ventricle
3.left atrium
4.left ventricle
Which of the following is characteristic of animals?
a. heterotrophy. b. autotrophy. c. photosynthesis. d. both b and c.
Biology & Microbiology